Liquid-fuel burner



J. W. COWELL.

LIQUID FUELBURNER. APPLICATION FILED MAY 17, 1918.;

1,342,988. PatentedJune8,1920.

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'J. W. COWELLa LIQUID FUEL BURNER.

APPLICATION FILED MAY17, 1918.

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UNITED STATES PATENT OFFICE.

JOHN W. COWELL, OF CHICAGO, ILLINOIS, ASSIGNOR OF TWO-THIRDS TO MONROE KOHN, OF CHICAGO, ILLINOIS.

LIQUID-FUEL BURNER.

Application filed May 17, 1918.

To all whom it may concern:

Be it known that I, JOHN W. CoWELL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Liquid-Fuel Burners, of which the following is a specification.

This invention relates to liquid fuel burners in which a combustible gas or vapor is generated from a liquid hydrocarbon and water or steam, and the invention has for its object to provide a simple and highly efficient burner of this type.

The object stated is attained by means Qf a novel combination and arrangement of parts to be hereinafter described and claimed, and in order that the same may be better understood, reference is had to the accompanying drawings forming a part of this specification, it being understood that while the preferred embodiment of the invention has been illustrated, various changes and modifications may be made without a de parture from the spirit and scope of the invention as claimed hereinafter.

In the drawings,

- Figure 1 is an elevation of the burner positioned in the fire pot of a stove or range;

Fig. 2 is a plan view of the burner;

Fig. 3 is an enlarged longitudinal section on the line 33 of Fig. 2, and

Figs. 4, 5 and 6 are sectional details on the lines 44. 5-5, and 6-6, respectively of Fig. 3.

Referring specifically to the drawing 10 denotes a fragment of an ordinary kitchen range or other type of stove in which the burner is adapted to be installed. The burner is mounted in the fire pot 10 being supported on the grate 10 The door 11 to the fire pot has openings through which are passed fuel and water pipes 12 and 13, respectively, leading from an elevated tank 14 containing a partition 15 which'divides the tank into two compartments. The fuel pipe is connected to one of these compartments, and the water pipe to the other; the first mentioned compartment being designed to hold a supply of kerosene or other liquid fuel, and the other compartment a supply The tank is hung or otherwise supported in elevated position on any suitable support.

The fuel i e 12 has a service valve 16, and on the inside of the stove 10, said pipe Specification of Letters Patent.

Serial No. 235,142.'

connects, through a suitable fitting 17, with a vertical end pipe 18 forming a part of the burner. Above its connection with the fuel supply pipe 12, the pipe 18 receives a T-head 19 having one end plugged as shown at 20, and connecting at its opposite end with a generator pipe 21 extending horizontally therefrom and having at its outer end an elbow 22 for attachment of a downward return bend 23 continued, as shown at 24, directly beneath the pipe 21 in spaced relation therewith, and constituting a vapor drying and feeding pipe, its outer end being closed by a cap 25.

The burner is supported with the pipe 24 seating in upstanding forks 26 at the ends of a pan 2? having feet 28, which latter, in turn, rest on the grate bars 10*. From the Patented J une 8, 1920."

pan also rises a standard 30 perforated at 31 to let the pipe 24 pass, and forked at the top as shown at 32 to provide a seat for the upper pipe 21. p

c As shown in Figs. 3 and 4, the water pipe 13 connects, through a suitable fitting 33, with an elbow 34 communicating laterally with the bottom of the end pipe 18, the latter. having a T-fitting thereat to one of the branches of which the elbow 34 is connected. To the other branch of the T-fitting 35 is connected, by means of an elbow 36, a steam generator in the form of a stand pipe 37. In that branch of the T-fitting 35 to which the pipe 18 is connected is mounted a plug 38 having a restricted longitudinal port 3S through which water or steam may fiow into the pipe 18. Above this plug, the pipe 18 is provided with a needle valve 39 for controlling the flow of steam into its upper portion, and the latteris fitted with a ported plug 40 which reduces to a narrow nozzle tube 41 rising nearly to the top of the T-head 19.

The generated vapor is designed to issue from two top apertures 42 in the pipe 24, air chambers formed by hoods 43 being positioned above the same. These hoods have top openings and the pipe 24 passes transversely through the same. Directly below the pipe 24, under each hood, the pan 27 has an inclined rib 44 for drainage to the wall is slotted, as shown at MS, to permit drainage from the rib 44: down to the pan. As shown more clearly in Fig. 5,'the rib 44 has laterally spaced upstanding flanges or walls 47 rising to the height of the pipe 24, and between these flanges and the hood walls, the pan is provided with segmental openings 47* to allow upward spray of vapor or gas to draw air from beneath the van.

1 The for-ks '26 at one end of the pan 27 are higher than those at the other end, and to their upper ends is pivoted, as shown at 4'8, a lever 49 having a needle plug 50 whereby the aperture 12 at this end of the pipe 2 l maybe closed,thereby shutting oil this portion of'the burner, leaving the other portion in operation.

Above each hood 43, in vertical alinement therewith, is positioned a deflector disk 51 for spreading the flame. This disk is supported from the pipe 21 by two oppositely directed, integral hooks 52. A lift and lateral twist of the disk disengages the hooks from the pipe for easy removal of the disk. The top of each disk is shaped to form a shallow trough 53 to hold liquid fuel for better heating of the pipe 21 when the burner is started.

One end of the pipe 21 has a ported plug 54; which prevents said pipe from being completely emptied of liquid fuel.

Lugs 55 rising from the pan 27 serve to station the hoods 43, and on the bend 23 is a sleeve 56 against which the latter crowds when the cap 25 is screwed in, whereby the pipe 24 is rigidly held in place.

' The pipe 37 is located close to the burner so that the spreading flames come in contact therewith and quickly heat the same. As soon. as steam is generated in this pipe it forces the water back and, in attempting to force its way out across the top of the water, it produces-a condition in the vicinity of the restricted port 38 which will enable a stream of steam or a mixture of steam and finely divided water to be discharged through this port although the port may be so small that the surface tension of the water may prevent the water from flowing through without the assistance of the steam formed in the pipe 37 The steam, or the mixture of steam and water, enters the lowermost chamber in the pipe 18, where it expands between the plug 38 and the valve 39. The steam next passes the needle valve 39 which is adjusted to regulate the discharge, and after passing this valve it again expands in the pipe 18 and passes through the port of the plug e0 and through the tube L1 to the top of the generating pipe 21 where it joins and mixes with the gaseous vapors from the liquid fuel, and both are carried into the pipe 24% and issue from the "outlet apertures 42 where the generated hydro-carbon gas escapes 1I1 combustion and is spread by the disks 51. The burner is started by turning on the fuel until it escapes from the apertures 12 and drops into the pan 2?. The fuel in the pan is then ignited, which quickly heats the pipes 21 and 25% so that the generation of vapor now starts. The plug Set is provided for the purpose of protecting the pipe 21 so that at all times there will be some oil in said pipe even when all is generated into gas. hen the fuel is turned off, the gas condenses in the pipe 21 and there is left a s-uiiicient supply of fuel in the pipe for starting the burner again.

The hoods 43 confine the air entering through the openings an for close contact with the vapor jets, so that more air will be caused to mix with the vapor.

I claim:

1. The combination with a burner and means for supplying fuel in the form of vapor thereto, of a standpipe in position to be heated by the burner, the standpipe having a lateral extension at its lower end, a water supply pipe connected to said exten sion and having a cross sectional area considerably smaller than the latter, and a conduit communicating with said extension through a restricted port connected to the burner.

2. In a device of the character described, a burner, a vapor generator connected to the burner, a steam generator in position to be heated by the burner, a conduit for supplying water to the steam generator, and a connection between said conduit and the vapor generator having restricted inlet and outlet ends and an intermediate portion in the form of a comparatively large chamber.

In testimony whereof I aliix my signature.

JOHN WV. GOWELL. 

